Home / 7,631.40-11,438.58-3,928.44

Finding the Fourth Proportional to 7,631.40, 11,438.58 and 3,928.44

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Solution

The fourth proportional to 7,631.40, 11,438.58 and 3,928.44 is: 5,888.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,631.40 : 11,438.58 = 3,928.44 : x
  2. Step 2: Convert to fraction form
    7,631.40/11,438.58 = 3,928.44/x
  3. Step 3: Cross multiply
    7,631.40x = 11,438.58 × 3,928.44
  4. Step 4: Simplify right side
    7,631.40x = 44,935,775.22
  5. Step 5: Solve for x
    x = 44,935,775.22/7,631.40
  6. Step 6: Final answer
    x = 5,888.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.